Connection closed mismatched mod channel list aternos как исправить

I made myself a server using forge, and so far we only have 5 mods in the server. my friend downloaded all 5 correctly, and for some reason it said this.

Please do tell me whats wronge.

alright, i’m guessing this is what you wanted.

not rlly sure what’s wrong. me and my friend have tried everything to get him into the server, so once you find the solution please tell me what was wrong.

so apparently i was looking at the wrong thing and had to scroll all the way down and found a text file called «latest.log» if thats what you’re looking for.

https://paste.ubuntu.com/p/RCSk5PJv7N/

Looks like there are no mods loaded — does he have the mods in the right directory? Or does it work in Singleplayer?

I made myself a server using forge, and so far we only have 5 mods in the server. my friend downloaded all 5 correctly, and for some reason it said this.

Please do tell me whats wronge.

alright, i’m guessing this is what you wanted.

not rlly sure what’s wrong. me and my friend have tried everything to get him into the server, so once you find the solution please tell me what was wrong.

so apparently i was looking at the wrong thing and had to scroll all the way down and found a text file called «latest.log» if thats what you’re looking for.

https://paste.ubuntu.com/p/RCSk5PJv7N/

Looks like there are no mods loaded — does he have the mods in the right directory? Or does it work in Singleplayer?

I attempted to create my own modded server to play with a friend, using Forge, the CurseForge application, and a modpack that I’ve put together. My modpack works fine in my single-player test world. However, I’ve unfortunately encountered the «mismatched mod channel list» error when using the set for a server.

I set up a server (downloaded the correct Forge version installer that matches my modpack, ran the JAR file to «Install Client» (in the default Minecraft game folder), then «Install Server» (in a created folder for my server files). I ran «run.BAT», got the eula.txt, edited the «false» to «true», ran again «run.BAT», and the server is made. It works fine when I open the Minecraft launcher, go into «Multiplayer» in-game and test out a Direct Connection to «localhost».

But, I wanted to use my modpack, so I copied over everything from my modpack’s «mods» folder into my server’s «mods» folder, as well as all the «config» files into the respective «config» folder. After running «run.BAT» again (and a few times after), I ended up having to remove the OptiFine mod and a few client-side mods from the server’s mods folder. Ran «run.BAT» again, and that time it opened the console GUI, so supposedly it was working…until I opened Minecraft through the CurseForge app from my modpack profile and tested the «localhost» direct connection in-game, I received the message «Connection closed — mismatched mod channel list«.

Checked the server «latest.log», found some groups of «ERROR» lines, tried to remedy a couple of those (one by removing a mod, and one by fixing a typo in a JSON file). Also tried asking a few of the mod authors about their mod’s errors I received in this log (if they affect anything in a server or are safe to ignore). Still awaiting responses, at the moment. However, I’m unsure if those error lines are anything I should focus on at this point, or is there something else to look for to fix this «mismatched mod list» issue? Otherwise, I’ve been stuck with what to do anymore, thus hoping for any answers or suggestions here.

Here’s the latest server log:

[removed]

From the main Minecraft directory (appdata/roaming/.minecraft)? There’s definitely different content in there (only a few things), was I to copy all of the same mods and configs from the modpack folder into there as well as my server folder?

Here’s the latest.log info from the main Minecraft directory:

[removed]

No change that I’ve noticed.

I did try a pre-made modpack, installed it in the CurseForge app, downloaded the server of it and extracted that as a folder, downloaded the matching Forge version and installed client — the result is that this server worked (except that I couldn’t get OptiFine to work with it; it wouldn’t show up in-game). But I was able to do a direct connection to a «localhost» server with the pre-made modpack.

I had downloaded the correct OptiFine installer and tried both moving it into the main Minecraft mods folder, as well as extracting the «MOD» in it and having just that in the folder, but OF won’t show up in the game’s video settings or anything.

Aside from that, I’m not sure why this pre-made modpack worked when I tried a «localhost» server, no «mismatched mod list» error, but to create a server with my modpack doesn’t work and has that «mismatch» issue.

With using Forge you don’t need to install or extract Optifine — just put the jar file into your client’s mods folder to the other mods

I’ve placed the OptiFine JAR file in the Minecraft mods folder, with and without the OF «mod» in my modpack folder (my server folder has not had any OF files the entire time), and still the «mismatched mod list» error in-game. The only thing different is OF showing up if I have the «mod» form of it in my modpack folder, and otherwise doesn’t appear when I remove its «mod» form from my modpack folder.

Apologies if I’m misunderstanding how dealing with Forge, OF, mods, and hosting a server works, as this is the first time I’ve attempted making such.

Not sure if this is potentially an issue/relevant to the «mismatched mod list» problem, but I just noticed between my server latest.log and .minecraft latest.log, the Java info are slightly different: the .minecraft log states «starting: java version 17.0.1 by Microsoft«, and the server log states «starting: java version 17.0.2 by Oracle Corporation«. Under my programmes list, I have two Java 8 Update 321 (one is 64-bit) and a Java SE Dev Kit 17.0.2 (64-bit). Is there something that needs to change here?

EDIT: Well, now Idk if that’s the issue because I just checked the pre-made modpack I tested out, which also states 17.0.2 by Oracle, and that was a functioning server…

Oh, okay.

Still haven’t been able to resolve the mismatched mods issue. Even tried removing client-side only mods from the server mods folder, and vice versa (although not 100% certain of few of them), but no change.

I’ve attempted altering a copy of the pre-made modpack and server I tested from before, replaced all the mods, config, and resource packs in the CurseForge profile copy, and replaced all the mods and config files in the server folder I had downloaded from the modpack’s webpage and set up. Then the direct connection to «localhost», and same error… The log for this server has additional errors for missing pieces because of removed mods (from the pre-made modpack, in order to have matched with the content in mine).

Tried using the highest OptiFine version for 1.18.1 instead (HD U H6 for Forge 39.1.0), and also changed the Forge version of my modpack profile to match that, 39.1.0. In an experiment to recreate this profile from scratch, going through all the mods, I found a couple that weren’t specifically for version 1.18.1, despite being functional within the modpack in a single-player world. Encountered some issue with a mod, «Tiered», and its library depedent, «UnionLib», which I noticed in a post about a server crash for 1.18.1, and the author suggested a specific version of UnionLib which did help, and actually was the final issue I’ve faced with this, as my modpack server finally logged me into the world and functioned like normal.

So it probably was a few issues with versions of some mods, I just wouldn’t have ever noticed unless actually going through and meticulously picking out the versions that are strictly for «1.18.1», along with making sure none of the mods are having other clashing versions within that. Hopefully there won’t be any more issues and the multiplayer server will turn out well. Thanks for your input, certain ones are helpful to know.